NEC PD750008 User Manual
Page 275
255
CHAPTER 11 INSTRUCTION SET
In
Mne-
Number
Machine
Address-
struc-
monic
Operand
of
cycle
Operation
ing
Skip condition
tion
bytes
area
RETI
Note 1
1
3
• µPD750004
0, 0, 0, 0 <– (SP+1)
PC
11-0
<– (SP)(SP+3)(SP+2)
PSW <– (SP+4)(SP+5), SP <– SP+6
• µPD750006, µPD750008
0, 0, 0, PC
12
<– (SP+1)
PC
11-0
<– (SP)(SP+3)(SP+2)
PSW <– (SP+4)(SP+5), SP <– SP+6
• µPD75P0016
0, 0, PC
13
, PC
12
<– (SP+1)
PC
11-0
<– (SP)(SP+3)(SP+2)
PSW <– (SP+4)(SP+5), SP <– SP+6
PUSH
rp
1
1
(SP–1)(SP–2) <– rp, SP <– SP–2
BS
2
2
(SP–1) <– MBS, (SP–2) <– RBS,
SP <– SP–2
POP
rp
1
1
rp <– (SP+1)(SP), SP <– SP+2
BS
2
2
MBS <– (SP+1), RBS <– (SP),
SP <– SP+2
EI
2
2
IME(IPS.3) <– 1
IExxx
2
2
IExxx <– 1
DI
2
2
IME(IPS.3) <– 0
IExxx
2
2
IExxx <– 0
IN
Note 2
A,PORT
n
2
2
A <– PORT
n
(n=0 – 8)
XA,PORT
n
2
2
XA <– PORT
n+1
, PORT
n
(n=4, 6)
OUT
Note 2
PORT
n
,A
2
2
PORT
n
<- A (n=2 - 8)
PORT
n
,XA
2
2
PORT
n+1
,PORT
n
<– XA (n=4, 6)
HALT
2
2
Set HALT Mode (PCC.2 <– 1)
STOP
2
2
Set STOP Mode (PCC.3 <– 1)
NOP
1
1
No Operation
Note 1. The shaded portion is supported in Mk II mode only. The other portions are
supported in Mk I mode only.
2. MBE = 0, or MBE = 1 and MBS = 15 must be set when an IN/OUT instruction is
executed.
Subroutine stack control
Interrupt
control
I/O
CPU control